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M Twin Turbo oil compatibility?

Discussion in 'E90/E92/E93 M3 (2008-2013)' started by loungin, Mar 25, 2015.

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    How is the new M Twin Turbo 10W-60 oil that BMW is selling as OEM? How does it compare to the TWS?

    If I fill up with the M Twin Turbo, is it safe to top off with my existing bottle of Castrol Edge Pro TWS 10W-60?

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    The new oil is just as good as the TWS (pretty much the same just made by BMW now). Yes they are completely interchangeable and can mix with each other without any harm.

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